If you have problems getting your card to work then you may need to use another SD card reader. Some laptop built in readers are known not to write images properly. Use a standalone reader instead.

You may also need to format the card before writing the image using Win32DiskImager. The Windows format function may not be adequate. Instead use the SD Formatter 3.1 for SD/SDHC/SDXC available from sdcard.org.